Liquid-hydrocarbon burner



Sept. 30. 1924.`

. F. R. MACDONALD ET AL LIQUID HYDRUCARBON BURNER ll, 192? 2 Sheets-Sheet l Filed Dec.

Fig. 3

Fn'enmcn SAMUEL Lovlcn-Jo- Nqon INVENTORS By t/ 'CLL/1. Attorney.

Sept. 30, 1924.

F. R.'MACDONALD ET AL 1,510,183

LIQUID HYDROCAHBON BURNER Filed Dec. 11, 1922 2 Sheets-Sheet 2 FRANCIS RANDOLPH MAwoNA Ln WILLIAM ROBERTALEXANDER FJCKERSGILI. FREoRlcK SAMUEL LovxcK-JOH NsoN |NVENTOR5 Mu/1 Amway- Patented Sept. 30, 1924.

PATENT OFFICE.

UNITED STATES FRANCIS R. MACDONALD, WILLIAM R. A. PICKERSGILL, AND FREDERICK S. LOVICK JOHNSON, OF LONDON, ENGLAND.

LIQUID-HYDROCARBON BUR-NER.

Application led December 1,1, 1922. Serial No. 606,306.

To @ZZ whom t may concern.'

Be it known that we, FRANCIS RANDOLPH MACDONALD, of 28 Charles Street, Haymarket, London, S. W. 1, England, WILLIAM ROBERT ALEXANDER PIoKERsGILL, of 2 Villa Road, Brixton, London, S. IV., England, FREDERICK SAMUEL LovroK-Jor-iNsoN, of 5 Montana Road, Tooting Bec Common, Ilondon, S. IV., England, all subjects of the King of Great Britain and Ireland, have invented certain new and useful Improvements in or Relating to Liquid-Hydrocarbon Burners, of which the following is a specification.

This invention relates to liquid hydrocarbon burners of the type in which the atomizing agent, steam or air, is arranged so that angle impact ensues between said agent and the liquid to be atomized.

The object of this invention is to provide an improved burner of this type.

A burner made inaccordance with this invention comprises, a casing, a nozzle unit detachably and pivotally mounted within the casing, and having an inclined weir and combed dripping edge down which the liquid hydrocarbon flows with means for adjusting the unit about its pivots to the desired position and may comprise means for enabling the atomizing fluid to attain its maximum velocity before coming in contact with the liquid hydrocarbon, means for suitably distributing the liquid hydrocarbonon tothe weir, means for directing the atomizing Huid to a surface below the weir, means for i1n-` part-ing an increasing velocity to the oil film with the object of securing a maximum degree of ineness of the oil iilm at the point of contact with the atomizing uid, and means for altering the size of the nozzle.

Referring to the drawings tiled herewith:

Fig. l is a longitudinal sectional side elevation through the centre of the burner, showing the burner and casing complete;

Fig. 2 is a rear end view showing the manner of the mounting of the burner in its casing and the fuel and atomizing fluid pipe connections Fig. 3 is a part sectional plan view of the burner and casing.

In the form shewn in the drawings a is the casing, Z9 is the nozzle unit, having bosses c and (l by which it is pivotally mounted in the casing. The nozzle unit comprises a distributing trough c and a well f having a communicating passage g vleading to' the boss c.

Oil is admitted through the central well f and the passage g and flows by gravity from the trough down the inclined weir L. The weir 7L is provided with ribs The lower or dripping edge of the' weir is provided with a series of equidistant fins or teeth 7c, and is in effect a comb, the projecting ends of which teeth end at the line of intersection of the inclined surface of the whole tray or weir, and the bottom horizontal surface m below the Weir.

Secured to the upper member e of the nozzle unit is a lower member n which forms a steam chamber o, with the bottom horizontal surface of the upper member, a passage p leads from the steam chamber o to the boss (l. The lower member n is secured over a boss g on the underside of the upper member c, by a nut s on a stud fr fixed in the boss Q. Ai packing fu` is placed between the lower member and the upper member so as to leave a nozzle or outlet o for the air or steam directly beneath the teeth 7c of the weir L.

The thickness of the packing u determines the size of the nozzle orice. An adjustable screw w and a lock nut as is provided in the underside of the casing, which screw w bears against the nut s and on which the nozzle unit rests. Adjustment of the bolt raises and lowers the nozzle unit. A cover o is provided over the weir 7L.

The casing a is provided witha screwed socket. 2 to which the oil control valve or supply pipe 3 is adapted to be secured. The inner end of the screwed socket is coned out to receive the coined or spherically shaped endof the boss c. IIorizontally opposite andV coaxially with the socket in the other side of the casing a is a screwed sleeve l, by which the coned end 5 of the air or steam supply tube 6v is adapted to be pressed against the coned or spherically shaped end of the boss CZ of the nozzle unit. The nozzle unit is therefore pivotally mounted in the casing, and is supplied with oil through 4one pivot and steam or air through the other pivot. The valves not shown are of course tted on the supply pipes, to control the burner.

The oil enters the nozzle unit through the -sleeve l and the boss o and passes to the trough c, through the passage g and the well j'. From the trough e the oil Hows over by gravity on to the inclined welr, and

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according' to the quantity o oil supplied will flow down between a ew or all ot the ribs and will linally fall over and through the teeth .7.: on the edge of the weir. The dow of oil down the inclined surface is free from obstruction and owing to the progres sively increasing angle ot the inclined surface down which it flows, spreads out into a thin film with progressively increasing velocity of flow, finally falling through the teeth of the comb. Here it meets the steam or air which has entered the nozzle unit through the coned end 5 of the tube G and having passed through the passage j into the steam chamber o is passed out through the nozzle Z2.

TheV burner just described has very tea'. simple parts, which are light and compact. The nozzle unit may be readily remored, without disturbing the supply pipes other than to slaclen off the'screwed sleeve 1t. The oil is equally distributed over the whole surface of the Weir, when the burner is operatino' to its full capacity, and owing to the naturav rise of the oil flowing up to the trough through the central well f, the oil is concentrated over the central portion of the weir when operating at light feeds. rIhe 4oil film is very thin when delivered for atomizing by reason of its acceleration down the steep inclined surface of the weir.

The actual manufacture ot the burner does not involve minutely accurate facing work, and the uniforniity of the steam oriiice is determined by the packing. The direction of the flame is easily adjusted, while in operation, by elevating or depressing the burner. The atomizing agent and oil {ilin both reach their maximum velocity at their line of contact.

In this form the oil nozzle or weir is integral with the upper part of the nozzle unit, and the steam nozzle is formed between the upper unit and the lower unit secured thereto.

IVe may however provide a similar design in which the steam nozzle is integral with the main part of the nozzle unit and the oil nozzle or Weir is suitably attached thereto.

What we claim and desire to secure by Letters Patent is l. In a. burner of the character described, the combination with a casing, a fuel nozzle unit mounted .in the casing and provided with an inclined weir and a rigid combed dripping edge and adapted to spread a fuel i'ilm tlowing over the weir and dripping:r over the edge, and a. supply pipe for the nozzle unit7 ot a second nozzle arranged adjacent the first and adapted to direct an atomizing agent into angular impact with the spread l'uel. and a supply pipe for the second nozzle, .said l'uel nozzle unit being' piyotally. adjustably and detachably mounted about the supply pipes whereby the angle oit declination o'l' the weir may bc adjusted to alter the velocity and thickness ot the. l'fuel. film.

9.. In a burner of the clnuzucter deserilu-al, the combination of elements as claimed in claim l, in which the inclined surface of said weir lies in adjacent planes ot progressively increasing slope whereby the veleciti.,v ot the lnel lilni is increased in definite stages oia acceleration before dripping over the combed edge,

In a burner of the character described, the combination ol elements as clain'ied in claim l, in which said weir is provided with ridges adapted to be encountered by the `flowing fuel film and to split the fuel tilin into streams up to a point short. ot' the dripping edge.

4. In a burner ot the character described. the combination with a casing, a fuel nozzle unit mounted in the casing and provided with an inclined weir and a rigid combed dripping edge and adapted to spread a tuel lilm flowing over the weir and dripping over the edge, and a supply pipe for the nozzle. unit, ot a relatively movable under-plate adjacent 'the nozzle unit and constituting with the underside ot the nozzle unit a second nozzle chamber adapted to direct an atomizing agent into angular inipact Awith the spread fuel. yieldable packing means intel'- posed between the under-plate and the nozzle unit, a supply pipe for the second nozzle chamber, said 'fuel nozzle unit being pivotally, adjustably, and detachably mounted about the supply pipes whereby the angle ot declination of the weir may be adjusted to alter the velocity and. thickness of the fuel lihn, and adjustable clamping means for said under-plate whereby the size of the nozzle chamber may be altered.

In testimony whereof we allix our signatures.

F. R. MA CDONALI). W. Il. A. PICKER (llLlz F. S. L(Vl(lli-JOHNSON. 

